Part 7, 1929] FABACEAE: GALEGEAE 459 



ascending, the rachis sparingly pubescent; stipules deltoid, 2-5 mm. long; leaflets 9-13, oblong- 

 cuneate, notched, 3-10 mm. long, pilose on both sides or glabrate above; peduncles 3-5 cm. 

 long; racemes 1-2 cm. long; bracts lanceolate, 1 mm. long, black-ciliate; pedicels very short; 

 calyx black-hairy, the tube less than 1 mm. long, the teeth subulate, of about the same length; 

 corolla purple or white, 4 mm. long; banner broadly obovate, retuse; wings shorter, the blade 

 oblong, with a large spreading auricle; keel-petals shorter, the blade broadly lunate; pod 3-4 

 mm. long, white-pubescent with rather long crisp hairs, cross-ribbed, sulcate on the lower 

 suture, the dorsi-ventral view suborbicular, the lateral one nearly semi-orbicular, the cross-sec- 

 tion deeply cordate. 



Type locality: Island of Catalina, California. 



Distribution: Southern Oregon to Lower California. 



Illustrations: M. E. Jones, Rev. Astrag. pi. 71, f. 267; Jepson. Man. Fl. PI. Calif. /. 567. 



1 1. Hesperastragalus didymocarpus (H. & A.) A. Heller, 

 Muhlenbergia 2 : 87. 1905. 



Astragalus didymocarpus H. & A. Bot. Beech. Voy. 334. 1838. 

 Tragacantha didymocarpa Kuntze, Rev. Gen. 944. 1891. 



An annual; stems branched from the base, ascending, strigose, and striate; leaves 3-6 

 cm. long, ascending; stipules broadly deltoid, acuminate, scarious, striate; leaflets 9-17, 

 oblong-cuneate, notched at the apex, 5-10 mm. long, glabrate above, pilose beneath; peduncles 

 3-6 cm. long; racemes dense, head-like, oblong, 1-2 cm. long; flowers subsessile; bracts subulate, 

 2 mm. long; calyx black -hairy, the tube 1.5-2 mm. long, the teeth subulate, nearly as long; 

 corolla 6-7 mm. long; banner oblanceolate, notched at the apex, strongly arched; wings shorter, 

 the blade oblong, with a large basal auricle; keel-petals still shorter, the blade nearly semi- 

 orbicular, obtuse at the apex; pod nearly spherical, 3 mm. long, 2.5 mm. wide and thick, 

 strongly cross-ridged, minutely strigulose, deeply sulcate on the lower suture; seed usually 

 solitary in each cavity, obliquely rounded-reniform. 



Type locality: California. 



Distribution: Central and southern California. 



Illustrations: H. & A. Bot. Beech. Voy. pi. 81; M. E. Jones, Rev. Astrag. pi. 71. f. 269. 



12. Hesperastragalus catalinensis (Nutt.) Rydb. bull. Torrey Club 

 53: 169. 1926. 



Astragalus catalinensis Nutt. Proc. Acad. Phila. 4: 9. 1848. 



An annual; stem branched at the base, 1-3 dm. high, sparingly strigulose; leaves 3-5 cm. 

 long, ascending; stipules deltoid, 2-4 mm. long; leaflets 11-17, narrowly linear, 4-12 mm. long, 

 deeply notched into 2 acute teeth at the apex, glabrous above, pilose or strigose beneath; 

 peduncles 3-5 cm. long; racemes dense, oblong, 1-1.5 cm. long; bracts lanceolate, 1-2 mm. 

 long; calyx black -hairy, the tube 1.5-2 mm. long, the teeth subulate, 1-1.5 mm. long; corolla 

 5-7 mm. long, purple or white; petals similar to those of //. didymocarpus; pod nearly globose, 

 nearly 3 mm. long, pubescent with comparatively short crisp hairs; seeds mostly solitary in 

 each cavity. 



Type locality: Island of Catalina, California. 

 Distribution: Southern California and Lower California. 



13. Hesperastragalus Milesianus Rydb. Bull. Torrey Club 

 53: 169. 1926. 



An annual; stem erect, 2-3 dm. high, glabrous or with a few scattered hairs; leaves 4-6 

 cm. long, ascending; stipules 2-3 mm. long, deltoid, more or less scarious; leaflets 11-13, 

 oblong-cuneate, about 1 cm. long and 2 mm. wide, emarginate, glabrous above, sparingly 

 hairy beneath; peduncles 4-5 cm. long; racemes head-like, dense, 1-2 cm. long, fully 1 cm. 

 broad; bracts lanceolate, 1-2 mm. long; flowers subsessile; calyx black-hairy, the tube 2-2.5 

 mm. long, the teeth subulate, fully 1 mm. long; corolla purplish; banner oblanceolate, 1 cm. 



